Hello, I lost one girl on Easter who convulsed then had a huge prolapse in the end.my flock are just a year old, first hen was a black giant who died, 2nd is a barred rock. Was no warning to her being ill. Rest of flock acting normal crazy selves. Today at 9 to fed,water and observe, one had a small prolapse. Removed her from coop, soaked in warm soapy water,cleaned vent, and pushed it back in slowly. She was fine for 30 min.and being ornery again. Can anyone pls suggest why this could be happening??